_:b56487265	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56487265	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56487264	<http://www.w3.org/ns/oa#hasSelector>	_:b56487265 .
_:b56487264	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/861331c3e2e02fc2ad37835a72e81dd2750193df/0> .